Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #4: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 11:10:23 PM (PDT) on Friday, August 29, 2025.
The magnitude 1.1 event occurred 3 km (2 miles) ESE of Colton, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Friday, August 29, 2025 at 11:10:23 PM (PDT) Saturday, August 30, 2025 at 6:10:23 (UTC) |
| Distance from |
Colton, CA - 3 km (2 miles) ESE (107 degrees) Loma Linda, CA - 3 km (2 miles) NW (313 degrees) Grand Terrace, CA - 4 km (3 miles) NE (36 degrees) San Bernardino, CA - 7 km (4 miles) S (174 degrees) Rialto, CA - 9 km (6 miles) ESE (119 degrees) |
| Coordinates | 34 deg. 4.0 min. N (34.066N), 117 deg. 17.1 min. W (117.285W) |
| Depth | 6.90 km (4.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=59, Nph=101, Dmin=4.3 km, Rmss=0.19 sec, Erho=0.14 km, Erzz=0.43 km, Gp=29 degrees |
| Event ID# | ci41279168 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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